Don't error in views if no docs found (#8339)

Author: torcolvin

db/query.go

@@ -811,7 +811,7 @@ func (c *DatabaseCollection) CountAllDocs(ctx context.Context) (uint64, error) {
 			Value float64 `json:"value"`
 		}
 		err = results.One(ctx, &row)
-		if err != nil {
+		if err != nil && !strings.Contains(err.Error(), "No results returned.") {
 			return 0, err
 		}
 		return uint64(row.Value), nil

db/query_test.go

@@ -539,6 +539,10 @@ func TestCountAllDocs(t *testing.T) {
 	defer db.Close(ctx)
 	collection, ctx := GetSingleDatabaseCollectionWithUser(ctx, t, db)
 
+	count, err := collection.CountAllDocs(ctx)
+	require.NoError(t, err)
+	assert.Equal(t, uint64(0), count)
+
 	// Add some docs
 	numDocs := 5
 	var docToDelete *Document
@@ -550,7 +554,7 @@ func TestCountAllDocs(t *testing.T) {
 		}
 	}
 
-	count, err := collection.CountAllDocs(ctx)
+	count, err = collection.CountAllDocs(ctx)
 	require.NoError(t, err)
 	assert.Equal(t, uint64(numDocs), count)